If you watch or listen to music or podcasts in iTunes during the day, here's a quick keyboard shortcut that can help you skip forward over an ad or backward to catch something you missed.

As long as you have some media playing in iTunes, press Cmd+Option+Left Arrow to skip backwards five seconds, or Cmd+Option+Right Arrow to skip forward five seconds. Hold the keys down and you'll keep skipping backwards or forwards with momentary pauses so you can keep up. Bonus: the shortcut also works in VLC.

Shortcut of the Day highlights a great shortcut on various platforms from the desktop to mobile devices to the web. You can find more shortcuts here.